source: rtems/c/src/lib/libbsp/m68k/mvme136/startup/bspstart.c @ 3652ad35

4.104.114.84.95
Last change on this file since 3652ad35 was 3652ad35, checked in by Joel Sherrill <joel.sherrill@…>, on Sep 19, 1995 at 2:53:29 PM

Minor bug fixes to get all targets compilable and running. The
single biggest changes were the expansion of the workspace size
macro to include other types of objects and the increase in the
minimum stack size for most CPUs.

  • Property mode set to 100644
File size: 5.4 KB
Line 
1/*  bsp_start()
2 *
3 *  This routine starts the application.  It includes application,
4 *  board, and monitor specific initialization and configuration.
5 *  The generic CPU dependent initialization has been performed
6 *  before this routine is invoked.
7 *
8 *  INPUT:  NONE
9 *
10 *  OUTPUT: NONE
11 *
12 *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
13 *  On-Line Applications Research Corporation (OAR).
14 *  All rights assigned to U.S. Government, 1994.
15 *
16 *  This material may be reproduced by or for the U.S. Government pursuant
17 *  to the copyright license under the clause at DFARS 252.227-7013.  This
18 *  notice must appear in all copies of this file and its derivatives.
19 *
20 *  $Id$
21 */
22
23#include <bsp.h>
24#include <rtems/libio.h>
25
26#include <libcsupport.h>
27#include <z8036.h>
28
29#include <string.h>
30#include <fcntl.h>
31
32#ifdef STACK_CHECKER_ON
33#include <stackchk.h>
34#endif
35
36/*
37 *  The original table from the application and our copy of it with
38 *  some changes.
39 */
40
41extern rtems_configuration_table  Configuration;
42rtems_configuration_table         BSP_Configuration;
43
44rtems_cpu_table Cpu_table;
45
46char *rtems_progname;
47
48/*      Initialize whatever libc we are using
49 *      called from postdriver hook
50 */
51
52void bsp_libc_init()
53{
54    extern int end;
55    rtems_unsigned32        heap_start;
56
57    heap_start = (rtems_unsigned32) &end;
58    if (heap_start & (CPU_ALIGNMENT-1))
59        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
60
61    RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0);
62
63    /*
64     *  Init the RTEMS libio facility to provide UNIX-like system
65     *  calls for use by newlib (ie: provide __open, __close, etc)
66     *  Uses malloc() to get area for the iops, so must be after malloc init
67     */
68
69    rtems_libio_init();
70
71    /*
72     * Set up for the libc handling.
73     */
74
75    if (BSP_Configuration.ticks_per_timeslice > 0)
76        libc_init(1);                /* reentrant if possible */
77    else
78        libc_init(0);                /* non-reentrant */
79}
80
81/*
82 *  Function:   bsp_pretasking_hook
83 *  Created:    95/03/10
84 *
85 *  Description:
86 *      BSP pretasking hook.  Called just before drivers are initialized.
87 *      Used to setup libc and install any BSP extensions.
88 *
89 *  NOTES:
90 *      Must not use libc (to do io) from here, since drivers are
91 *      not yet initialized.
92 *
93 */
94 
95void
96bsp_pretasking_hook(void)
97{
98    bsp_libc_init();
99 
100#ifdef STACK_CHECKER_ON
101    /*
102     *  Initialize the stack bounds checker
103     *  We can either turn it on here or from the app.
104     */
105 
106    Stack_check_Initialize();
107#endif
108 
109#ifdef RTEMS_DEBUG
110    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
111#endif
112}
113 
114
115/*
116 * After drivers are setup, register some "filenames"
117 * and open stdin, stdout, stderr files
118 *
119 * Newlib will automatically associate the files with these
120 * (it hardcodes the numbers)
121 */
122 
123void
124bsp_postdriver_hook(void)
125{
126  int stdin_fd, stdout_fd, stderr_fd;
127
128  if ((stdin_fd = __open("/dev/console", O_RDONLY, 0)) == -1)
129    rtems_fatal_error_occurred('STD0');
130 
131  if ((stdout_fd = __open("/dev/console", O_WRONLY, 0)) == -1)
132    rtems_fatal_error_occurred('STD1');
133 
134  if ((stderr_fd = __open("/dev/console", O_WRONLY, 0)) == -1)
135    rtems_fatal_error_occurred('STD2');
136 
137  if ((stdin_fd != 0) || (stdout_fd != 1) || (stderr_fd != 2))
138    rtems_fatal_error_occurred('STIO');
139}
140
141
142int main(
143  int argc,
144  char **argv,
145  char **environp
146)
147{
148  m68k_isr_entry *monitors_vector_table;
149  int             index;
150
151  if ((argc > 0) && argv && argv[0])
152    rtems_progname = argv[0];
153  else
154    rtems_progname = "RTEMS";
155
156  monitors_vector_table = (m68k_isr_entry *)0;   /* 135Bug Vectors are at 0 */
157  m68k_set_vbr( monitors_vector_table );
158
159  for ( index=2 ; index<=255 ; index++ )
160    M68Kvec[ index ] = monitors_vector_table[ 32 ];
161
162  M68Kvec[  2 ] = monitors_vector_table[  2 ];   /* bus error vector */
163  M68Kvec[  4 ] = monitors_vector_table[  4 ];   /* breakpoints vector */
164  M68Kvec[  9 ] = monitors_vector_table[  9 ];   /* trace vector */
165  M68Kvec[ 47 ] = monitors_vector_table[ 47 ];   /* system call vector */
166
167  m68k_set_vbr( &M68Kvec );
168
169  (*(rtems_unsigned8 *)0xfffb0067) = 0x7f; /* make VME access round-robin */
170
171  m68k_enable_caching();
172
173  /*
174   *  we only use a hook to get the C library initialized.
175   */
176
177  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
178
179  Cpu_table.predriver_hook = NULL;
180
181  Cpu_table.postdriver_hook = bsp_postdriver_hook;
182
183  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
184
185  Cpu_table.do_zero_of_workspace = TRUE;
186
187  Cpu_table.interrupt_vector_table = (m68k_isr_entry *) &M68Kvec;
188
189  Cpu_table.interrupt_stack_size = 4096;
190
191  Cpu_table.extra_system_initialization_stack = 0;
192
193  /*
194   *  Copy the table
195   */
196
197  BSP_Configuration = Configuration;
198
199  BSP_Configuration.work_space_start = (void *)
200     (RAM_END - BSP_Configuration.work_space_size);
201
202  /*
203   * Add 1 region for the RTEMS Malloc
204   */
205
206  BSP_Configuration.maximum_regions++;
207
208  /*
209   * Add 1 extension for newlib libc
210   */
211
212#ifdef RTEMS_NEWLIB
213    BSP_Configuration.maximum_extensions++;
214#endif
215
216  /*
217   * Add another extension if using the stack checker
218   */
219
220#ifdef STACK_CHECKER_ON
221    BSP_Configuration.maximum_extensions++;
222#endif
223
224  /*
225   * Tell libio how many fd's we want and allow it to tweak config
226   */
227
228  rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS);
229
230  rtems_initialize_executive( &BSP_Configuration, &Cpu_table );
231  /* does not return */
232
233  bsp_cleanup();
234
235  return 0;
236}
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